1522561161 has 32 divisors (see below), whose sum is σ = 2295475200. Its totient is φ = 889206080.

The previous prime is 1522561151. The next prime is 1522561177. The reversal of 1522561161 is 1611652251.

It is a cyclic number.

It is not a de Polignac number, because 1522561161 - 2⁶ = 1522561097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1522561111) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 617950 + ... + 620408.

It is an arithmetic number, because the mean of its divisors is an integer number (71733600).

Almost surely, 2^1522561161 is an apocalyptic number.

1522561161 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1522561161 is a deficient number, since it is larger than the sum of its proper divisors (772914039).

1522561161 is a wasteful number, since it uses less digits than its factorization.

1522561161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3149.

The product of its digits is 3600, while the sum is 30.

The square root of 1522561161 is about 39020.0097514083. The cubic root of 1522561161 is about 1150.4248363571.

The spelling of 1522561161 in words is "one billion, five hundred twenty-two million, five hundred sixty-one thousand, one hundred sixty-one".